Golf club

ABSTRACT

Provided is a golf club for leisure and sports of a new concept which is an application of a golf game. More particularly, the golf club includes a head, a shaft and a grip in which the head has a plurality of air vent holes to reduce weight of the head to thereby shorten a flight distance of a golf ball when struck and in flight. Accordingly, an effect of saving a land can be obtained by reducing the golf club&#39;s head weight, in view of a practical use of the land, when a golf playing field is constructed. Particularly, the golf club enables leisure and sports of a new concept including a new golf playing method, to thereby lead to a popular base spread of the golf play, and to thus provide public effects of making use of people&#39;s spare moments such as recreational pastime and promoting fitness and welfare, by change of work situation such as five working days a week or change of social situation such as member&#39;s graying.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims the benefit of Korean Patent Application No.10-2006-0054805, filed on Jun. 19, 2006, in the Korean IntellectualProperty Office, the disclosure of which is incorporated herein in itsentirety by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a golf club for leisure and sports of anew concept which is an application of a golf game, and moreparticularly, to a golf club which includes a head, a shaft and a gripin which the head has a plurality of air vent holes to reduce weight ofthe head to thereby shorten a flight distance of a golf ball when struckand in flight.

2. Description of the Related Art

In general, as is well known, golf clubs are classified into three kindsof ‘Wood’, ‘Iron’, and ‘Putter’ according to shape and quality of thematerial of a head which is used to strike a golf ball, respectively.These three kinds of golf clubs have respectively different usage andfunctions. Accordingly, golfers can be allowed to follow rules of golfgames so as to select a golf club which is fit in circumstance duringplaying a golf game. Therefore, golf clubs are core factors toaccomplish golfer's technique which is displayed during playing a golfgame, and golf club's performance has a close interrelation withgolfer's scores.

General techniques developed regarding golf clubs taking into accountthe above-described situation, lean to vanguard materials ormanufacturing methods of golf clubs in order to secure a maximum flightdistance of a struck golf ball and make the struck golf ball dropcorrectly at a target site. For example, Korean Laid-open PatentPublication No. 2005-85378 (29 Aug. 2005), which is hereinafter calledconventional art, discloses a “golf club and a method of designing thesame” for improving a flight distance of a golf ball. According to thestructure of the conventional golf club with reference to FIG. 1, theconventional golf club includes a hollow head 4 having a face portion 1,a crown portion 2 and a sole portion 3, in which a conversion hardnessratio of the smaller hardness ratio in terms of the greater hardnessratio of respective conversion hardness of the crown portion 2 and thesole portion 3 becomes 0.75 or below.

The conventional technology provides a golf club which can reduce a backspin to thus enlarge a striking angle, and provides an effect ofimproving a flight distance of a golf ball when struck and in flight.But, in the case of the conventional technology for increasing a flightdistance of a golf ball, as the flight distance becomes longer, a widerand longer land should be prepared to make a golf course capable ofprolong the flight distance. As a result, the conventional art cannotsolve the defect of accelerating encroachment of the land such as forestor field, because a wider space must be secured. Of course, theconventional golf club should be designed and developed after takinginto account the regulations about golf clubs in order to prevent theessence of golf games from changing by development of equipment such asgolf clubs. However, in the case of the conventional golf club,alteration of shape or form of the golf club is nothing but a narrowlimit. In addition, in the case of the conventional golf club, it issubstantially difficult to judge whether or not a degree of improvementof performance that increases a flight distance of a golf club violatesthe regulations about golf clubs. Further, in the case of theconventional golf club cannot solve fundamental problems that costincurred for constructing golf-playing facilities and maintenance feesthereof are burdensome in order to increase the flight distance of golfballs.

SUMMARY OF THE INVENTION

To solve the above problems of the conventional art, it is an object ofthe present invention to provide a golf club which includes a head, ashaft and a grip in which the head has a plurality of air vent holes toreduce weight of the head to thereby shorten a flight distance of a golfball when struck and in flight.

It is another object of the present invention to provide a golf clubwhich can shorten a flight distance of a golf ball when struck and inflight, to thereby solve a problem of land encroachment for constructinga golf playing field, and to thus lead to a popular base spread of agolf play through new conceptive leisure and sports employing anapplication of a golf game method.

To accomplish the above objects of the present invention, there isprovided a golf club comprising a head, a shaft and a grip wherein thehead comprises a plurality of air vent holes, to thereby reduce thetotal weight of the golf club and diminish an effect of a striking powerof the golf club due to friction with air passing through the air ventholes when swing and weight of the golf club.

Preferably but not necessarily, each air vent hole has an identicaldiameter in a linear form from the front portion and the rear portion ofthe air vent hole and perforates from a face of the head to a crown orsole of the head, in which annular insertion tubes are inserted into andintegrated with the head through the inner circumferential surfaces ofthe perforated air vent holes, respectively.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and advantages of the present invention willbecome more apparent by describing the preferred embodiment thereof inmore detail with reference to the accompanying drawings in which:

FIG. 1 is an exploded perspective view schematically illustrating aconventional golf club;

FIG. 2 is an exploded perspective view schematically illustrating a golfclub according to a preferred embodiment of the present invention;

FIG. 3 is a perspective view cut along a line “A-A” of FIG. 2; and

FIGS. 4A and 4B are perspective views respectively illustrating a golfclub's head according to an exemplary embodiment of the presentinvention, in which FIG. 4A illustrates an iron head and FIG. 4Billustrates a putter's head.

DETAILED DESCRIPTION OF THE INVENTION

A golf club according to an exemplary embodiment of the presentinvention will be described below in detail with reference to theaccompanying drawings.

FIG. 2 is an exploded perspective view schematically illustrating a golfclub according to a preferred embodiment of the present invention. Asshown in FIG. 2, the golf club according to a preferred embodiment ofthe present invention includes a head 10 which forms a striking surface,a shaft 20 which forms the overall length of the golf club, and a grip30 which corresponds to a handle. As illustrated in FIGS. 4A and 4B,golf clubs are classified into three kinds of ‘Wood’, ‘Iron’, and‘Putter’ according to shape and quality of the material of a head 10which is used to strike a golf ball, respectively. Specially, the golfclub of this invention includes a plurality of air vent holes 40 in thehead 10, to thereby reduce weight of the head in the golf club.

That is, the golf club according to the preferred embodiment of thepresent invention has been invented considering an interrelation betweena head speed made by swing a golf club and a flight distance of a golfball when struck and in flight. In other words, the golf club is formedof a technical structure, that is, air vent holes 40, in order to reducea flight distance of a struck golf ball on the basis of an experimentalresult that a head speed of a golf club is proportional to a weight ormass of a head in the golf club at the state where other conditions areequal.

In general, the head 10 of the golf club includes a face 11 contacting agolf ball, a crown 12 forming an external shape and a sole 13 formingthe center of gravity for improving a sense of security and a flightdistance. As shown in FIG. 3, the air vent holes 40 which are providedin the head 10 of the golf club are made in a linear form, respectively.That is, each air vent hole 40 perforates from a face 11 of the head 10to a crown 12 or sole 13 of the head 10. The shape of each air vent hole40 may be variously implemented into a circular form or other polygonalform. For example, the diameter of each air vent hole 40 is same in alinear form from the front portion and the rear portion of the air venthole 40, as illustrated in FIG. 3.

In addition, it is preferable that annular insertion tubes 41 areinserted into and inserted into and integrated with the head 10 throughthe inner circumferential surfaces of the perforated air vent holes 40,respectively. The annular insertion tubes 41 make air smoothly flowthrough the air vent holes 40, respectively. Further, the annularinsertion tubes 41 are made of a material which prevents the innercorrosion of the head 10 due to rainwater, dew, etc., which flowsthrough the air vent holes 40 with air at rainfall, to thereby play arole of improving corrosion resistance and durability.

The function of the golf club having the above-described structureaccording to the preferred embodiment of the present invention will bedescribed with reference to the accompanying drawings.

As illustrated in FIGS. 2, 4A and 4B, the golf club according to thepreferred embodiment of the present invention includes a head 10 havingair vent holes 40 in all kinds of ‘Wood’, ‘Iron’ or ‘Putter’ golf clubs.Accordingly, since weight of the head 10 itself can be reduced, astriking power applied at the moment of striking a golf ball by the head10 from the peak height when back swing the golf club for striking thegolf ball, is sharply decreased. As a result, a flight distance of thestruck golf ball is finally reduced.

In particular, the air vent holes 40 which are perforated in a circularor polygonal shape increase a friction area between the head 10 of thegolf club and air when swing the golf club. Further, since the weight ofthe head 10 is decreased, a force which is converted into a repellingpower is reduced at the moment when the face 11 in the head 10 of thegolf club strikes the golf ball. Accordingly, the flight distance of thestruck golf ball is reduced.

Here, the insertion tubes 41 according to the preferred embodiment ofthe present invention are inserted into and integrated with the air ventholes 40 whose inner surfaces are finished neatly, and made of amaterial which prevents the inner corrosion of the air vent holes 40formed in the head 10 due to rainwater at rainfall, dew which is formedon the grass of the golf playing field, etc., which flows through theair vent holes 40 with air, to thereby play a role of improvingcorrosion resistance and durability. That is, the insertion tubes 41according to the preferred embodiment of the present invent ion makerainwater at rainfall, dew which is formed on the grass of the golfplaying field, etc., which is introduced into the inner portion of theair vent holes 40 flow through the inner surface of the air vent holes40 to then be easily discharged out, and to thereby prevent corrosion bymoisture remaining in the air vent holes 40. As a result, durability ofthe head 10 in the golf club is enhanced.

As described above, the present invention has been described withrespect to a particularly preferred embodiment. However, the presentinvention is not limited to the above embodiment, and it is possible forone who has an ordinary skill in the art to make various modificationsand variations, without departing off the spirit of the presentinvention.

As described above, the present invention provides a golf club includinga head, a shaft and a grip in which the head has a plurality of air ventholes to reduce weight of the head of the golf club to thereby shorten aflight distance of a golf ball when struck and in flight. Accordingly,an effect of saving a land can be obtained in proportion to as much as arelatively shortened flight distance obtained by reducing the golfclub's head weight, when a golf playing field is constructed. As aresult, the present invention provides an effect of preventing waste ofunnecessary land for constructing a golf playing field.

Specially, the golf club according to the present invention enablesleisure and sports of a new concept including a new golf playing method,and does not only have excel lent corrosion resistance and durabilitybut also reduces a production cost, to thereby lead to a popular basespread of the golf play, and to thus provide public effects of makinguse of people's spare moments such as recreational pastime and promotingfitness and welfare, by change of work situation such as five workingdays a week or change of social situation such as member's graying.

1. A golf club comprising: ahead; a shaft; and a grip, wherein the headcomprises a plurality of air vent holes, a golf club comprising a head,a shaft and a grip wherein the head comprises a plurality of air ventholes, each air vent hole of which diameter is same in a linear formfrom the front portion and the rear portion of the air vent hole andwhich perforates from a face of the head to a crown or sole of the head,and wherein annular insertion tubes are inserted into and integratedwith the head through the inner circumferential surfaces of theperforated air vent holes, respectively.